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cs89
  • Member for 10 years, 7 months
  • Last seen more than 1 year ago
  • Paris, France
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12
Where to upload digitized LaTeX versions of old papers?
11
Prove $ \frac{x_1-x_2}{x_n+x_1} + \frac{x_2-x_3}{x_1+x_2}+\cdots+ \frac{x_n-x_1}{x_{n-1} +x_n}\le 0$ s.t. $x_1+\cdots+x_n=1$
10
Shape that a bending rod makes
9
Is a piecewise linear function always a sum of concave and convex functions?
8
When are complex polynomial maps surjective?